Odd: there's a major deviation among two counties that are both in metro Boston. The counties are Suffolk, MA (covers Boston and some towns South but not Cambri

Odd: there's a major deviation among two counties that are both in metro Boston. The counties are Suffolk, MA (covers Boston and some towns South but not Cambridge, where the major tech cluster is) and Middlesex, MA (Cambridge & some towns North, including most of the big companies on Rt 128). Suffolk's median is 120k based on 339 employees. Middlsex's median is 90k based on 929 employees. Could there really be a plausible reason for these places to differ so much? The only thing I can think of is that the big boring suburban companies are mainly in Middlesex, whereas most of the software companies in Suffolk are likely in Boston where the rents and salaries are higher. Of course, Kendall Square in Cambridge is a bigger and pricier tech hub than downtown Boston, so it might cancel the effect somewhat. Alternatively, the data could just suck.